#include <Keypad.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <Servo.h>
LiquidCrystal_I2C lcd(0x27, 16, 2); 
String pad;
const byte numRows = 4;
const byte numCols = 4;
String password = "1007";
char keypressed;
char keymap[numRows][numCols] =
{
  {'1', '2', '3', 'A'},
  {'4', '5', '6', 'B'},
  {'7', '8', '9', 'C'},
  {'*', '0', '#', 'D'}
};
byte rowPins[numRows] = {10, 9, 8, 7};
byte colPins[numCols] = {6, 5, 4, 3};
Keypad myKeypad = Keypad(makeKeymap(keymap), rowPins, colPins, numRows, numCols);

int pos1 = 0;
int pos2= 180;
Servo myservo;

int LED = 12;

int Ton = 11;

int Alarm = 1;
float Licht = 4;
float Sound = 5;


void setup() {

  myservo.attach(13);
  pinMode(LED, OUTPUT);
  pinMode(Sound, OUTPUT);
  Serial.begin(9600);

  lcd.init();
  lcd.setCursor(0,0);
  lcd.print("4 stall code");
  lcd.setCursor(0,1);
  lcd.print("D to confirm");
  delay(2500);
  lcd.clear();
}
void loop() {


  readKeypad();
  if (keypressed == 'D') {
    if (pad == password) {
      lcd.setCursor(0, 0);
      lcd.clear();
      lcd.print("Richtig");
      myservo.write(pos1);
      delay(50);
      delay(1000);
      lcd.clear();
      lcd.print("you got 1M Gold");
      Alarm = (Alarm = 1);
      delay(1000);
      lcd.clear();
      myservo.write(pos2);
      delay(50);
    } else {
      lcd.clear();
      lcd.setCursor(0, 0);
      Alarm = (Alarm + 1);
      Serial.println(Alarm);
      lcd.print("Falsch");


      if (Alarm == Licht);
      {
      digitalWrite(LED, HIGH);
      delay(250);
      digitalWrite(LED, LOW);
      delay(250); 
      }


      if (Alarm == Sound);
      {
      digitalWrite(Ton, HIGH);
      delay(1000);
      digitalWrite(Ton, LOW);
      delay(250);
      }

      if (Alarm == 5)
      {
        Alarm = (Alarm = 1);
      }

      delay(1000);
      lcd.clear();
    }
  } if (keypressed == '*') {
    pad = "";
    lcd.clear();
  }
  lcd.setCursor(0, 0);
  lcd.print(pad);
  delay(100);
}
void readKeypad() {
  
  keypressed = myKeypad.getKey();
  
  if (keypressed != 'D') {
    String konv = String(keypressed);
    pad += konv;
  }
}